PRACTICE QUESTIONS Flashcards
What are carbohydrates
a) Plant structural materials such as cellulose
b) sugars synthesized by autotroph organisms
c) organic compounds consisting of onl carbon, hydrogen adn oxygen
d) startch
e) all of the above
E) all of the above
What is true for shade tolerant plants?
a) They invest little in the production of chlorophyll because the canopy trees block out most of the sunlight
b) they allocate a greater proportion of their net energy to root production than to leaf production
c) the availability of rubisco limits the rate of photosynthesis
d) they have leaves with large surface area
d) they have leaves with large surface area
A taller plant shading those individuals below, and reducing available light is referred to
a) preemptive competition
b) consumption competition
c) overgrowth competition
d) territorial competition
c) overgrowth competiton
According to Lotka-Volterra equations, which of the following is not an expected outcome of competitive interactions between two species
a) species 1 drives species 2 to extinction
b) species 2 drives species 1 to extinction
c) Both species coexist
d) The populations of both species increase to infinity
d) The populations of both sepcies increase to infinity
The portion of potential resources and conditions that an organism could exploit if there were no competitors around is its
a) Home range
b) territory
c) Fundamental niche
d) realized niche
c) Fundamental niche
As altitude increase, ____________, and a rising air parcel _______.
a) Atmospheric pressure and temperature decrease; expands
b) Atmospheric pressure decreases and temperature increases; expands
c) Atmospheric pressure increases and temperature decreases; shrinks
d) Atmospheric pressure increase and temperature decreases; shrinks
a) Atmospheric pressure and temperature decrease; expands
According to Hardy-Weinberg principle, the following must be trust for gene frequencies in a population to remain the same.
a) Mating is random
b) Mutation occurs consistently
c) The population is small
d) Natural selection cocurs
a) Mating is random
Mutation is the ultimate source of genetic variation because _________
It introduces brand new alleles
If the environment changes imposing the following pressures on a population: the predators catch mostly dark mice on the white sand or the drought causes the proportion of large seeds to increases. What will be the consequence of natural selection in light of these environmental pressures?
More white mice more large seeds
